First, short positions are called asset sell orders (SELL). They usually don't exist for long, unlike asset buy orders (BUY), which traders hold for much longer, that is why they are called short. Secondly, I talked about the impossibility of making money on the exchanges in the fall, because the exchanges don't provide the necessary functionality. When an asset is sold by a trader, the broker provides him with a “loan” to buy an asset, which is immediately sold in order to subsequently buy it at a lower price. Profit is the price difference. And when selling an asset on the exchange, the trader simply gets rid of it, going to the cache. On the exchange selling an asset is simply closing a deal — that's the difference.